US3632958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode holder
Assignee: Tuffaloy Products Inc
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Filing: 1971-01-18
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Granted: 1972-01-04
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Expires: 1991-01-18
Abstract
Abstract An electrode holder which conducts welding current from a platen via a base, a hollow body, and a spindle in the body. The spindle has an electrode tip socket in its outer end. This eliminates shunt cables. The spindle is axially moveable and has a head inside the body abutting a flange on the body. A split-ring jamcollar abuts the head and a spring forces the jam-collar into current-carrying contact with both the head and the body. The collar and head have camming surfaces to move the ring radially against the body. By using a spring to suit the work, preloading the spring, and calculating added load to move the spindle axially, the force of contact at the workpiece can be controlled to make good welding contact and to not damage the tip or work. The length of inward travel of the spindle in conjunction with the strength of the spring and preload gives an accurate measure of applied load. Two or more such holders on a platen may be used with the springs compensating differences in spacing and in workpieces.
Inventors
- 👤 Robert B Width
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:47
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31; B23K11/317
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
265 words
An electrode holder for electrical welding comprising a base, a body having an internal wall defining a hollow bore and having opposite ends with a base end mounted on said base and an extending end, a flange adjacent said extending end of said body projecting radially into said hollow bore, a spindle lying in said hollow bore having a nose projecting axially through said flange outwardly of said body and having a head in said hollow bore for abutting said flange to limit outward movement of said spindle, axial force against said nose moving said spindle axially into said body by displacing said head axially inwardly away from said flange; said nose having means for mounting an electrode tip; said spindle head having a radial surface inside said bore, a jam-collar surrounding said spindle having a radial surface abutting said radial surface of said head; at least one said radial surface of said jam-collar and said head being tapered to provide radial camming therebetween; said jam-collar having a peripheral surface adjacent said internal wall of said body; said jam collar being split to allow outward radial expansion of said collar to engage said body internal wall; said radial surfaces of said head and collar coacting as a cam to move said jam-collar radially outwardly against said internal wall of said body; and a spring in said bore of said body compressible between said base and said jam-collar to urge said jam-collar axially into solid electrical contact with said head and radially into solid electrical contact with said body internal wall through said camming radial surfaces.
Claim 2
Dependent Claim
265 words
An electrode holder for electrical welding comprising a base, a body having an internal wall defining a hollow bore and having opposite ends with a base end mounted on said base and an extending end, a flange adjacent said extending end of said body projecting radially into said hollow bore, a spindle lying in said hollow bore having a nose projecting axially through said flange outwardly of said body and having a head in said hollow bore for abutting said flange to limit outward movement of said spindle, axial force against said nose moving said spindle axially into said body by displacing said head axially inwardly away from said flange; said nose having means for mounting an electrode tip; said spindle head having a radial surface inside said bore, a jam-collar surrounding said spindle having a radial surface abutting said radial surface of said head; at least one said radial surface of said jam-collar and said head being tapered to provide radial camming therebetween; said jam-collar having a peripheral surface adjacent said internal wall of said body; said jam collar being split to allow outward radial expansion of said collar to engage said body internal wall; said radial surfaces of said head and collar coacting as a cam to move said jam-collar radially outwardly against said internal wall of said body; and a spring in said bore of said body compressible between said base and said jam-collar to urge said jam-collar axially into solid electrical contact with said head and radially into solid electrical contact with said body internal wall through said camming radial surfaces.
Claim 3
Dependent Claim
49 words
In a device as set forth in claim 1, a platen; said device being mounted on said platen via said base; and an electric welding circuit cable connected to said platen; said circuit leading through said device to an electrodE tip via said base, body, jam-collar, head, and spindle.
Claim 4
Dependent Claim
131 words
In a device as set forth in claim 1, a platen; said device being mounted on said platen via said base; an electric welding circuit cable connected to said platen; said circuit leading through said device to an electrode tip via said base, body, jam-collar, head, and spindle; and at least a second device mounted on said platen; each said spring in each said device in conjunction with advancement of said platen toward a workpiece allowing inward movement of each said spindle relative to the other said spindle when an electrode tip makes contact with a workpiece to provide good electrode tip engagement with a workpiece to reduce variations in welds due to differences in tip extension and differences in tip and workpiece surfaces of one holder relative to the other.
Claim 5
Dependent Claim
37 words
In a device as set forth in claim 1, an welding circuit cable connected to said base with said device completing the circuit to an electrode tip held by said spindle via said body, jam-collar, and head.
Claim 6
Dependent Claim
57 words
In a device as set forth in claim 1, said flange having at least one key surface at said spindle nose; said spindle nose having a complementary surface axially slidable engaging said key surface; said surfaces preventing rotational movement of said spindle in said body to prevent rotational movement of an electrode tip held by said spindle.
Claim 7
Dependent Claim
54 words
In a device as set forth in claim 1, said collar being segmented into two or more segments to substantially eliminate collar resistance to outward radial movement and to provide separate collar segments free to move radially outwardly and/or axially independantly of one another in their location to insure overcoming differences, spacing, and tolerances.
Claim 8
Dependent Claim
62 words
In a device as set forth in claim 1, said spring being calebrated in strength relative to the workpiece being welded and to the tip employed to provide sufficient force of engagement to insure proper welding and to prevent excess force of engagement to eliminate undue deformation of tip and workpieces in conjunction with advancement of the device by a welding machine.
Claim 9
Dependent Claim
35 words
In a device as set forth in claim 1, said spring being selectable as to strength, preload compression, and additional load with advancement of the holder after contact by an electrode tip with a workpiece.
Claim 10
Dependent Claim
84 words
In a device as set forth in claim 8, said nose of said spindle normally projecting beyond the end of said body a known distance under preload of said spring; said nose moving into said body when said spring preload is exceeded by the force of workpiece contact; the distance said nose in moved inward being an indication of the added load imposed at the workpiece and a factor for calculating total load in conjunction with the known strength and characteristics of said spring,
Claim 11
Dependent Claim
27 words
In a device as set forth in claim 9, an index marked on said nose readable relative to said body to measure spindle in-travel of said nose.
Claim 12
Dependent Claim
120 words
In a device as set forth in claim 1, fluid cooling means comprising; a seal between said spindle and said body; said body being sealed relative to said base; said base having a fluid outlet conduct communicating with said bore of said body and said spindle said base having a fluid inlet conduit; said spindle having an inner end and an outer socket end; said spindle having an axial opening leading from said inner end to said socket end; a tube leading from said inlet conduit and extending through said spindle opening at least to said socket end; said tube being smaller than said spindle opening to create a return channel therebetween from said socket end to said outlet conduit.
References Cited (Backward Citations)
US2068043A
Cited
US2914652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |